MMZ3 – 24V 3 Zone – Single Stage Zone Control Panel

The Mini-MasterZone 2 or 3 Zone panels are an economical 2 or 3 zone only panel for single stage heating and cooling systems. Compatible with any 4/5 wire (Y-G-R-C-W) thermostats, these panels are the simplest zoning system yet and includes optional Fan ON In Heat (only on 3 Zone panel), needed with Hydro-Air and electric Heating systems. Built-in LEDs indicate system status and indicators to show each zone’s call.  All panels feature NEW color coded screw-less terminal blocks making wiring quick and simple.

The MMZ3 controls any 24VAC 2 or 3 wire zone damper.

When any zone calls for heating (or cooling), the panel accepts the first call, opens the damper to the calling zone, closes the dampers to the satisfied zones and activates the HVAC Unit. Any calls for the same mode, heating or cooling, will have their zone damper open and receive conditioned air. If an opposite call is made during this time, it will be held until the first mode calling is either satisfied or a maximum of 20 minutes expires, which then after an approximate 2 minute purge time, will switch over and satisfy the opposite call. Once all heating and cooling calls are satisfied the panel will accept fan only calls and cycle the dampers to supply air only to those zones with the Fan switch in the ON position. If there are no heat, cool or fan only calls, all dampers return to the open position. The 3 Zone Control Panels also has brownout protection, a built-in Re-Boot button for system reset and a built-in circuit breaker  to prevent the board and transformer from shorts.

Product Documentation

• Installation & Operating Instructions
• BPE - Installation & Operating Instructions(for products w/ "B" in Model #)

We ship products within 24-72 hours depending on order size and details.

For UPS Next Day shipping: Please call us to place your order.

FIVE (5) YEAR LIMITED WARRANTY on all 24V. Dampers and Controls and Bliss IOZ Systems ZONEFIRST warrants its products to be free of defects and to provide trouble-free operation for a period of Five (5) years from the date of installation. The warranty is limited to the cost of the product and does not include claims for labor or consequential damage. Prior authorization must be obtained from ZONEFIRST before returning any product. Products returned under warranty and found to be defective will be replaced or credited. Items returned within the warranty period that are found not to be defective and those items that are out of warranty are subject to a minimum repair or inspection fee. All returns must be sent freight prepaid with the return authorization number clearly marked on the packing slip. Returns without prior authorization will be refused. All items damaged in freight cannot be returned, and a claim must be made with the freight carrier.

LIFETIME Limited Warranty on Plug-in-Play™ Dampers and their respective Zone Panels. The warranty requires the return of the product for inspection before the credit for the replacement is issued.

RETURNS: All returns must have prior authorization and are subject to a 25% re-stocking charge. Custom and Special order items may not be returned for credit. Returns are for credit only and can only be used towards future purchases. Shipping fees are non-refundable.

The Returns process can be started here.